Circuit Theorems in AC Analysis Questions

• Referring to the given circuit, find ZTH if VS is 18∠0° V.
• The Norton equivalent current is
• Determine VTH when R1 is 180 Ω and XL is 90 Ω.
• Referring to the given circuit, determine ZTH as seen by RL.
• The two basic components of a Thevenin equivalent ac circuit are
• Referring to the given circuit, L
• For the given circuit, find VTH for the circuit external to RL.
• In applying the superposition theorem,
• For the circuit given, determine the Thevenin voltage as seen by RL.
• Referring to the given circuit, what is ZTH if R1 is changed to 220 Ω?
• Referring to the given circuit, what is VTH if VS = 12∠0° V?
• Referring to the given circuit, how much power, in watts, is delivered to the speaker at the determined frequency if VS = 4.5 VRMS?
• The Thevenin equivalent voltage is
• Referring to the given circuit, find ZTH for the part of the circuit that is external to RL.
• Determine VTH for the circuit external to RL in the given figure.
• Referring to the given figure, determine ZTH as seen by RL if R1 is changed to 3.3 kΩ.
• Determine the frequency at which the maximum power is transferred from the amplifier to the speaker in the given figure.
• Determine VTH if R1 is changed to 3.3 kΩ.
• Norton's theorem gives
• If two currents are in the same direction at any instant of time in a given branch of a circuit, the net current at that instant